delete merged branches

[montoyamoraga]

i think two branches can be safely deleted, since they were merged:
https://github.com/processing/p5.js-website/branches

"feature/footerUpdate"
https://github.com/processing/p5.js-website/tree/feature/footerUpdate

"integrating_showcase.p5js.org"
https://github.com/processing/p5.js-website/tree/integrating_showcase.p5js.org

i'm less sure, but maybe the branch "teach" can also be deleted
https://github.com/processing/p5.js-website/tree/teach
even though it doesn't show as merged here
https://github.com/processing/p5.js-website/branches
according to this PR it can be safely deleted?
https://github.com/processing/p5.js-website/pull/851#event-3733423101
but maybe @connieliu0 still needs this branch?

[connieliu0]

hi!, integrating_showcase.p5js.org can definitely be deleted, I'll do it now :) not sure about teach- maybe @yinhwa can comment on this?

[yinhwa]

Hi @montoyamoraga could we have the teach branch left for now :)? I think I can work on adding some teaching cases throughout next couple months. If you believe pulling request directly to the main branch more efficient, we can delete it too!

[montoyamoraga]

okie @yinhwa , lets leave the teach branch open for you, i am just a fan of not leaving stale branches open :) so we will be good

[yinhwa]

@montoyamoraga much thanks as always aarónieee :)))) i'll let you know when I can close the branch!